The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 17, 2001
Filed:
Mar. 15, 1999
Hermann J. Stadtfeld, Rochester, NY (US);
Eric G. Mundt, Rochester, NY (US);
The Gleason Works, Rochester, NY (US);
Abstract
A method of dressing a threaded grinding wheel such that twisting of workpiece tooth flanks does not occur during grinding. The grinding wheel is preferably dressed with a circular arc hollow-crowned generating front with the generating front being described by a radius, R,, and dressed into an axial plane of the grinding wheel. The workpiece is then relatively shifted across the grinding wheel along a feed shift vector which is oriented perpendicular to the axis of the workpiece. With this method, the effects of flank twist can be eliminated, or, a controlled amount of flank twist can be introduced not only in helical gears, but also in spur gears. The grinding wheel may also be dressed with a circular arc barrel-shaped generating front. The principles of the present invention may also be applied to hobbing tools.